| 摘要 |
Methods are provided for automatic detection of linear seismic events and th e detected events are used in correction of statics and geometry error. According to an example embodiment, a method is provided for automatically detecting substantially linear seismic events in multiple element data, and for correcting geometry and statics errors, wherein at least one element of the data comprises a shot and at least one other element of the data comprises a receiver, for a common eleme nt gather of traces, the method comprising: band pass filtering the traces; applying a dispersion filter to the direct arrival data; computi ng the complex trace envelope of traces of the gather; filtering out a DC component of the traces; sorting the gather by a first element line, a first element, a second element line, a second element, and an offset bin, wherein a sorted gather of traces is defined; wherein said computing and said sorting define a sorted gather of complex trace envelopes; transforming the sorted gather of complex trace envelopes into a set of velocity stack trace envelopes; wherein said traces are divergence corrected before said transforming and wherein said traces are positive bulk time shifted before said transforming; picking events from the velocity stack trace envelopes; determining statics errorbased on said picking; correcting said statics error; determining geometry error based on said picking; and correcting said geometry error. |
